baber/WOPTO huggingface dataset:
Patent JP-2896130-B1 (JP)
Title: 木材含水率測定方法
IPC: G01N27/04
Filed: 1998-03-09
Granted: 1999-05-31
Abstract: 【要約】
【課題】  簡単な装置で木材断面の任意個所の含水率分 布を非破壊的に測定する。
【解決手段】  木材の任意断面１，２，３，４において 互いに対面する側面間の複数カ所の電気抵抗と温度を測 定し、この値を、あらかじめ重回帰分析により求めた含 水率推定式である重回帰式に代入して、各々断面１の側 面間の各部位の含水率を求める。断面１と近接した位置 の断面３であって断面１の側面と直交する方向の側面間 の複数カ所の電気抵抗と温度を測定し、上記と同様に含 水率を求める。互いに直交する各側面間の温度及び電気 抵抗に基づく含水率データをもとにして、これらの含水 率を所定の断面に逆投影する逆投影法によって、木材内 部の所定の分割区域の小領域の含水率を算出し、木材内 部の含水率分布を求める。
Patent NL-2016592-B1 (NL)
Title: Cone penetration test device.
Inventor: FERDINANDUS JACOBUS JOHANNUS HOOGVELD
IPC: G01N33/24
Filed: 2016-04-12
Granted: 2017-11-01
Abstract: The invention relates to a cone penetration test device for performing a cone penetration test in a subsoil, wherein the cone penetration test device comprises a cone rod, a penetrometer with a cone that is connected with the lower end of the cone rod, a rod drive at the upper end of the cone rod, and a linear drive for vertical displacement of the rod drive, wherein the rod drive comprises a vibrator to exert a sinusoidal vertical vibration onto the cone rod with a sonic frequency in a range of 50-300 Hertz.
Patent NL-2030346-B1 (NL)
Title: Large-field-of-view infrared thermal imaging optical system
Inventor: LIPING WANG
IPC: A61B5/01
Filed: 2021-12-29
Granted: 2023-07-04
Abstract: The invention provides a large-f1eld-of-view infrared thermal imaging optical system, including, from an object plane to an image plane along an optical axis, a meniscus negative-refractive-power lens Ll, a diaphragm S, a double convex positive-refractive-power lens L2 and a meniscus positive-refractive-power lens L3. l/y is a reciprocal of an angle magnification of the meniscus negative-refractive-power lens Ll for an off-axis chief ray, satisfying 1551/7524. The present invention also provides application of the system to the field of medicine. The system achieves an optical system design with a large relative aperture, a large field of view and high illumination uniformity, has a high-spatial-resolution imaging capability and a capability of achieving a low-noise equivalent temperature difference and a large imaging field of view, meets a temperature measurement requirement on a high-performance infrared optical system, and is favorable for extensive application and popularization in medical technologies.
Patent NL-2030853-B1 (NL)
Title: Method for producing octocosanol with specific content
Inventor: JIANPING LIU
IPC: C07C29/80
Filed: 2022-02-08
Granted: 2023-08-14
Abstract: The present disclosure discloses a method for producing octocosanol with specific content, comprising the steps of: adding a higher fatty alcohol mixture containing 10—13% of octocosanol into a rectifying still, heating, and turning on a vacuum pump when the rectifying still reaches 230—250°C to keep the vacuum degree at 20—50Pa, after 30—50 min of total reflux, controlling the reflux ratio to be l:(5—20); collecting fractions at 210—235°C to obtain octocosanol with a purity of 40-95%, wherein by—products produced in the rectification process are classified and applied according to the detection results of gas chromatography.
Patent RO-81880-B1 (RO)
Inventor: BALAN MIRCEA
IPC: G01L7/10
Filed: 1974-01-15
Abstract: Inventia se refera la un separator pentru aparate de masurat presiunea, destinat în special aparatelor, respectiv manometrelor cu tub Bourdon, care masoara presiunea la medii corosive cu variatii de presiune. Separatorul foloseste, pentru amortizarea pulsatiilor, o perna de aer, creata într-un spatiu dintre doua membrane de constructie anticorosiva, fixate între doua corpuri, inferior si superior. Pentru protejarea manometrului la suprapresiune si împiedicarea scurgerii fluidului, în caz de rupere, a elementului elastic al manometrului, foloseste o piesa de obturare asezat liber în lichidul de separare.
Patent RO-81132-B1 (RO)
Inventor: THEIL HORST
IPC: F04C27/02
Filed: 1976-10-11
Abstract: Inventia se refera la o compozitie pentru inelele de etansare utilizate la pompe care lucreaza în medii foarte corosive, formata din 26,5 p rasina fenolica 6,5p alcool etilic, 1,5p acid boric, 52,5p frafit amestecat cu 6,5p praf de plumb si 6,5 p negru de fum, si la procedeul de realizare a inelelor constînd în omogenizarea componentelor turnarea pastei în matrita introducerea matritelor într-o presa hidraulica de 80.....100 tf, încalzita la temperatura de 160....180 degree C timp de 2h si în final inelele se scot prin presare si se supun unui tratament termic de 10....12h la temperatura de 160....180 degree C.
Patent RO-80811-B1 (RO)
Inventor: PAUL PUIU PETRU
IPC: B01D39/14
Filed: 1977-04-02
Abstract: Inventia se refera la o membrana filtranta si este constituita dintr-un strat format dintr-o netesuta din material rezistent la acizi si temperatura, îmbibata cu un amestec format din rasina fenolformaldehidica: acid benzensulfonic si apa în raport 1:0,2-0,8:0,2-0,8 parti greutate si la un procedeu pentru realizarea acesteia.
Patent RO-111768-B1 (RO)
Title: Oxazolyle derivates and preparation processes therefor
Inventor: JANSSENS FRANS EDUARD
IPC: A61K31/42
Filed: 1991-07-09
Abstract: Oxazolyl derivatives of formula (I), wherein -A<1>=A<2>-A<3>=A<4>- represents a bivalent radical having the formula -CH=CH-CH=CH- (a-1), -N=CH-CH=CH- (a-2), -CH=N-CH=CH- (a-3), -CH=CH-N=CH- (a-4), -CH=CH-CH=N- (a-5), -N=CH-N=CH- (a-6) or -CH=N-CH=N- (a-7); R represents hydrogen or C1-4alkyl; R<1> represents hydrogen, C1-6alkyl or hydroxy-C1-6alkyl; m represents 1 or 2; D represents C1-4alkanediyl; B represents NR<2>, CH2, O, S, SO or SO2 wherein R<2> is hydrogen or C1-4alkyl; n represents 0, 1 or 2; L represents hydrogen; C1-12alkyl; C3-6cycloalkyl; C3-6alkenyl optionally substituted with aryl; C1-6alkylcarbonyl; C1-6alkyloxycarbonyl; arylcarbonyl; arylC1-6 alkyloxycarbonyl; or a radical of formula -Alk-R<3> (b-1); -Alk-Y-R<4> (b-2); -Alk-Z<1>-C(=X)-Z<2>-R<5> (b-3); or -CH2-CHOH-CH2-O-R<6> (b-4), the pharmaceutically acceptable acid addition salts and stereochemically isomeric forms thereof have antiallergic properties. Compositions containing the same and methods of treating warm-blooded animals suffering from allergic diseases.
Patent RO-109755-B1 (RO)
Inventor: SACARESCU BOGDAN
IPC: C11D3/10
Filed: 1993-03-02
Abstract: Invenția se referă la un agent de
înmuiere și prespălare a textilelor din fibre
celulozice, fibre sintetice și amestecuri ale acestora.
Agentul de înmuiere și prespălare a textilelor este
constituit din liniaralchilbenzensulfonat de sodiu
și/sau alcooli grași sulfatați C12 - Clg, săpun pe
bază de acizi grași saturați și nesaturați C16 - C18 ,
tripolifosfatEDTA, carboximetilceluloza, silicat de
sodiu, ulei siliconic, parfumuri diverse alcool etilic,
înnălbitor optic și se caracterizează prin aceea că
raportul liniaralchilbenzensulfonatulde sodiu și/sau
alcolii grași sulfatați C12 - C]4 / săpun/ tripolifosfat
de sodiu/sodă calcinată este de
1/0,7...0,8/6...10/8...20.
Patent RO-108020-B1 (RO)
Inventor: SANDU NECULAI
IPC: D06B3/24
Filed: 1993-05-03
Abstract: Țesăturile sunt tratate în stare uscată
sau îmbibate cu emulsii siliconice în concentrație
de 10...20 g/1 în sistem ciclic progresiv și combinat
cu abur, la temperaturi de 11O...14O°C, alternând
cu aer rece și uscat cu aer.cald la temperatura de
9O...12O°C, cu o viteză cuprinsă între 300 și 1000
m/min, timp de 45/60 min. Instalația conține
elemente de alimentare și evacuare a flotelor de
tratare, în partea superioară fiind dispus un
subansamblu de tratare cu șocuri termice, prevăzut
cu un ajutaj (7) pentru abur, un ajutaj (10) pentru
aer cald, un ajutaj (12) pentru aer rece, prelungit
cu o carcasă (13) în fața căreia se află o placă (14)
cu profil cu caneluri pentru șocuri mecanice,
dirijarea țesăturii realizându-se cu un inel (16) și
o vârtelniță (15).
Patent RO-110860-B1 (RO)
Inventor: MACOR GABRIEL
IPC: F16H25/20
Filed: 1995-04-14
Abstract: Invenția se referă la un dispozitiv
pentru preluarea jocului din mecanismul șurubpiulijă,
destinat utilizării la acționarea meselor de la
mașinile-unelte. Dispozitivul conform invenției este
constituitdintr-un șurub (1) pe care sunt montate o
piuliță (4) și o altă piuliță (6). Pe piulița (4), este
dispusă o bobină de excitație (2). între piulița (4) și
piulița (6), este dispus tui pachet de pulberi (5).
Patent RO-111408-B1 (RO)
Title: Synergic fungicide composition and fungis control method
Inventor: ZEUN RONALD
IPC: A01C1/00
Filed: 1995-05-18
Abstract: Plant microbiocidal agent (A) comprises synergistic amounts of at least two components from compound (I), chosen from tetraconazole (Ia) or bromuconazole (Ib), and cyprodinil (II), in a carrier. All components may be present as their salts or metal complexes.  An Independent claim is also included for plant replicative material treated with (A).
Patent RO-115794-B1 (RO)
Title: Waterjet propulsion device
Inventor: LAZĂR IRON
IPC: B63H11/02
Filed: 1995-11-03
Abstract: The invention relates to a waterjet propulsion device for propelling floating or submersible bodies. According to the invention, the waterjet propulsion device is provided with a centrifugal rotor (1) having a lower disk with a convex edge (B), mounted in an annular hollow space inside a stator (3), said hollow space being defined by a solid curve (C), the tangent lines to the curve (C) at the inlet and oulet areas of the annular hollow space having inclination angles close to 180°, and the hollow space being divided by some radial walls (4) and downstream connected to a cylinder hollow space (A).
Patent RO-116923-B1 (RO)
Title: Higt-force pneumatic-hydraulic transmitter with succesive action
Inventor: NEDELCU DUMITRU
IPC: F15B3/00
Filed: 1997-02-03
Abstract: The invention relates to a high-force pneumatic-hydraulic transmitter with successive action meant for building the working devices from the tool-machines. The pneumatic-hydraulic transmitter comprises a cylinder (1) wherein some coaxial cavities (b, c and d) are cut, wherein some pistons glide (4, 8 and 10). The first and the second pistons (4 and 8) are integer with some rods (5 and 9) which glide in a passing orifice (e and f) communicating with all the three cavities (b, c and d). The rods (5 and 9) are provided with radials orifices which run into/encounters an axial channel (h). In the first and second cavities (b and c), opposite the pistons (4 and 8), some partition walls are inserted, gliding and being supported by a thrust spring (7). The compressed air is feed into/through an orifice (a), the air actuating the first piston (4) thereby moving the rod (12) of the last piston (10), thus applying directly the clamping force to a semi-product.
Patent RO-113726-B1 (RO)
Inventor: MIHUT IOAN
IPC: B28B3/20
Filed: 1997-02-06
Abstract: Invenția se referă la un
procedeu de obținere a unor blocuri ceramice
ușoare, prin care se supune extrudării un
amestec constituit din 5...40% argilă măcinată,
60...90% diatomită crudă măcinată,
0,5...3% aditivi aleși dintre lignosulfonat de
sodiu, dextrină și rășini lignosulfonice,
10...30% rumeguș sitat pe 100% materiale
plastice și 15...25% apă. Se usucă,, se
amestecă extrudat până la o umiditate de
maximum 3% iar, în final, se arde la
temperatura de 4OO...7OO°C, cu un ritm de
creștere a temperaturii de maximum 30°C/h.
continuându-se tratamentul termic la o
temperatură maximă, în palier, cuprinsă între
700 si 1050°C.
Patent RO-117309-B1 (RO)
Title: Process for preparing zinc sulphide
Inventor: POPOVICI ELISABETH-JEANNE
IPC: C01G9/08
Filed: 1997-04-04
Abstract: The invention relates to a process for preparing high purity zinc sulphide meant for phosphor synthesis by precipitation with fixing salt. The precipitation takes place in the presence of the sodium acetate fed in a single dosis at 15...30 min after the initiation of the precipitation. The precipitation process continues for other 90...105 min. The resulting precipitate is screened out in wet condition, filtered, dried and calcined at 700...900°C in nitrogen stream.
Patent RO-120256-B1 (RO)
Title: Method for thermal regeneration of spent acid
Inventor: POIJARVI JAAKKO
IPC: C01B17/88
Filed: 1998-12-04
Abstract: The invention relates to a method for the thermal regeneration of the spent acid produced during washing the sulphur dioxide existing in the waste gas generated in the pyrometallurgical production of metals. The separated spent acid is concentrated and supplied to the primary melting furnace and regenerated as sulphur dioxide, water and oxygen.
Patent WO-0243845-B1 (WO)
Inventor: COFFELT LOUIS A JR
IPC: A61F9/00
Filed: 2001-05-22
Abstract: The invention is a dual microliter dosage system. This system includes; a dual microliter dose (12) suspended below an outlet (5). The first dose is one ball of liquid (6) or medicament. The second dose is one ball of gas (7). A typical first dose can be 3, 4, 5, 6, 7, 8 or 9 microliters, including others. The second dose is approximately 2 microliters, including others.
Patent WO-0016209-B1 (WO)
Title: Correspondance dynamiquetm des utilisateurs pour la communication en groupe
Inventor: OLIVIER MICHAEL
IPC: H04L12/18
Filed: 1999-09-15
Abstract: L'invention concerne un procédé permettant à des utilisateurs d'échanger du courrier électronique en groupe en établissant des critères et profils individuels (302) de manière à déterminer des groupes individualisés. Les utilisateurs s'abonnent (208) à une liste d'adresses électronique en spécifiant des profils d'utilisateur et des critères de profils (302) afin de sélectionner d'autres utilisateurs. Quand un utilisateur s'abonne (208), un serveur réseau (346) établit et stocke une liste individualisée (204) d'abonnés (208) dont des critères correspondent à ceux de l'utilisateur. Quand l'utilisateur envoie un message à la liste (210) d'adresses, un serveur (354) de courrier électronique filtre sa liste de destinataires jusqu'à une liste de distribution de messages en utilisant un critère (302) du message de chaque destinataire. Le message est ensuite distribué aux utilisateurs correspondants. De plus, des archives de courrier électronique et des contributions d'informations venant des utilisateurs sont stockées dans une base de données. Un serveur réseau crée une série individualisée de pages réseau destinée à un utilisateur à partir de la base de données, contenant des contributions provenant uniquement des utilisateurs de sa liste de destinataires. Selon d'autres modes de réalisation, des utilisateurs appliquent une mise en correspondance des critères réciproques et des critères de profils de message à d'autres forums de groupes, tels que des groupes de presse, une messagerie téléphonique, une messagerie instantanée, une discussion, des groupes de discussion sur le réseau, et des rendez-vous de jeux en direct.
Patent AT-509018-B1 (AT)
Title: Flachabsorber
Inventor: DIETL MICHAEL MBA
IPC: F24S10/70
Filed: 2009-10-29
Granted: 2012-04-15
Abstract: Die Erfindung betrifft einen Flachabsorber (1), umfassend ein erstes, beschichtetes Blech (2) und ein zweites Blech (3), das mit dem ersten Blech (2) verbunden ist, wobei die Bleche (2, 3) beabstandete Kanäle (4) sowie zumindest einen mit den Kanälen (4) verbundenen Zulauf und zumindest einen mit den Kanälen verbundenen Ablauf für ein Wärmeträgermedium bilden. Erfindungsgemäß ist vorgesehen, dass die Bleche (2, 3) in Bereichen zwischen den Kanälen (4) entlang einer geschlossenen Linie miteinander durchgängig verbunden sind. Des Weiteren betrifft die Erfindung ein Verfahren zur Herstellung des Flachabsorbers (1).
Patent BG-62557-B1 (BG)
Title: System of blocks for arrangement
Inventor: FREDERIKSEN JESPER B
IPC: A63H33/08
Filed: 1997-03-12
Abstract: The system includes blocks in the form of a box (1) the upper side of which is supplied with one or more projections for connection (2, 9, 10, 14) which are arranged in a uniform design having mutual permanent modular distance and the lower side of which is supplied with supplementary means of connection (5, 11, 12). Projections (2, 9, 10, 11) at least partially determine the revolving symmetrical surface which in its upper part has a rounded or a pointed form for securing guiding surfaces for the supplementary means of connection. The largest cross section size (11) of the surface of a block having only one projection (2) is smaller or is equal to the difference between the respective diameter of the projections for connection and the double modular distance. The block system has different degrees of difficulty in positioning and orientation of the blocks during  their arrangement which depend on the number of projections. 9 claims, 5 figures
Patent CH-699048-B1 (CH)
Title: Verfahren zum Einbau einer Schienenfahrzeugkomponente in ein Schienenfahrzeug und entsprechende Schienenfahrzeugkomponente.
Inventor: KISTNER MICHAEL
IPC: B61C17/00
Filed: 2006-08-30
Abstract: Die Erfindung bezieht sich auf ein Verfahren zum Einbau einer Schienenfahrzeugkomponente in ein Schienenfahrzeug. Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zum Einbau bzw. zur Montage von Schienenfahrzeugkomponenten anzugeben, das sich besonders einfach und kostengünstig auch bei Doppelstock-Triebfahrzeugen einsetzen lässt. Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Schienenfahrzeugkomponente innerhalb des Schienenfahrzeugs, insbesondere innerhalb eines Triebfahrzeugs eingesetzt wird, wobei mit einer Transportgabel eines Gabelstaplers in eine gabelstaplerkompatible, komponenteneigene Transportstruktur der Schienenfahrzeugkomponente eingegriffen und die Schienenfahrzeugkomponente angehoben wird, mit dem Gabelstapler die Schienenfahrzeugkomponente seitlich durch eine Öffnung in einer Seitenwand des Schienenfahrzeugs in das Schienenfahrzeug hineintransportiert und auf einem Fahrzeugboden des Schienenfahrzeugs abgesetzt wird.
Patent CH-714369-B1 (CH)
Title: Befestigungsvorrichtung für die Installation von Stromschienen im Bereich der Decke eines Gebäudes.
Inventor: GERD PFLUGER
IPC: H02G5/02
Filed: 2017-11-26
Abstract: Die Befestigungsvorrichtung (1), die der Installation von Stromschienen (3) im Bereich der Decke (2) eines Gebäudes dient, umfasst eine mit der Decke (2) verbindbare Haltevorrichtung (11, 12) und ein zum Tragen wenigstens einer Stromschiene (3) dienendes Tragprofil (13). Erfindungsgemäss weist die Haltevorrichtung (11, 12) zwei senkrecht ausgerichtete und voneinander beanstandete Gewindestangen (12) auf, an denen je wenigstens eine justierbare Schraubenmutter (81; 82) vorgesehen ist, mittels der das Tragprofil (13) an einer vorgesehenen Position fixierbar ist, wobei das Tragprofil (13) derart an der Unterseite der Haltevorrichtung (11, 12) montierbar und demontierbar ist, dass die zu installierende Stromschiene (3), nach der Demontage des Tragprofils (13), senkrecht von unten in die Haltevorrichtung (11, 12) einführbar und das Tragprofil (13) nach dem Einführen der Stromschiene (3) mit der Haltevorrichtung (11, 12) verbindbar und die eingeführte Stromschiene (2) auf das Tragprofil (13) absenkbar ist.
Patent CH-702454-B1 (CH)
Inventor: WITTMER DETLEV
IPC: G05B19/048
Filed: 2010-12-14
Abstract: Die Erfindung betrifft eine Anordnung mit einer übergeordneten Steuereinheit (1) und zumindest einem mit der Steuereinheit (1) verbindbaren intelligenten Feldgerät (F1; F2; ...; Fn), wobei der Steuereinheit (1) zumindest eine Schnittstelle (2.1; 2.2, ...; 2.n) mit einem Anschlusselement (3.1; 3.2; ...; 3.n) zur Aufnahme eines entsprechenden Anschluss-Gegenstücks (4.1; 4.2; ...; 4.n) zugeordnet ist, wobei das Anschluss-Gegenstück (4.1; 4.2; ...; 4.n) einem Schnittstellenmodul (5.1; 5.2; ...; 5.n) zuordenbar ist, wobei dem Schnittstellenmodul (5.1; 5.2; ...; 5.n) eine den Zugriff auf das Feldgerät (F1; F2; ...; Fn) sichernde Softwareschutzeinrichtung (6.1; 6.2; ...; 6.n) zugeordnet ist, wobei das Schnittstellenmodul (5.1; 5.2; ...; 5.n) die Kommunikation zwischen dem entsprechenden Feldgerät (F1; F2; ...; Fn) und der übergeordneten Steuereinheit (1) erlaubt, wobei der übergeordneten Steuereinheit (1) ein Software-geschütztes Bearbeitungsprogramm (B1; B2; ...; Bn) für das Feldgerät (F1; F2; ...; Fn) zugeordnet ist, und wobei das Bearbeitungsprogramm (B1; B2; ...; Bn) über die Softwareschutzeinrichtung (6.1; 6.2; ...; 6.n) gestartet oder freigeschaltet wird, wenn das Anschluss-Gegenstück (4) des Schnittstellenmoduls (5.1; 5.2; ...; 5.n) des Feldgeräts (F1; F2; ...; Fn) mit dem Anschlusselement (3.1; 3.2; ...; 3.n) der Steuereinheit (1) verbunden wird.
Patent DD-232429-B1 (DD)
Inventor: GOEBEL ROLAND
IPC: C23C16/44
Filed: 1984-12-11
Abstract: To apply a silicon oxide adhesion-promoting layer to a metal prosthesis part or frame, for subsequent application of a dental plastic thereon, the prosthesis is subjected to flame hydrolysis derived from a flame hydrolysis burner (11) which has a silicon compound in vapor or gas form applied thereto in addition to a carbon-containing combustion gas, such as propane and air, the prosthesis part or frame being passed through the flame from the burner in the forward third thereof, the burner flame cone having, in operation, a length (L) of between 15 to 20 cm, a gas stream speed of about 1 m/sec., and wherein the length (L) of the cone exceeds the spacing distance (D) of the farthest part of the prosthesis from the mouth of the burner by only up to about 25%. For fine adjustment of the cone, a tinting substance can be added to the flame.
Patent EP-1026932-B1 (EP)
Inventor: BURN HEINZ
IPC: H05K7/20
Filed: 2000-01-28
Granted: 2005-03-30
Abstract: The system has a cabinet body enclosing an internal volume containing units with a floor, top wall (3) and peripheral walls including a rear wall, a front wall (7) and two side walls (5). At least one standard opening (20) is provided in a defined mounting region (11) in the top, floor or peripheral walls to make an air connection between a cooling or air conditioning module mounted on the defined mounting region and the electrical cabinet.
Patent EP-1079006-B1 (EP)
Inventor: KLINKEWITZ OTMAR
IPC: C25D13/22
Filed: 2000-06-14
Granted: 2004-07-14
Abstract: Cataphoretic dip coating apparatus comprises a bath having side walls (12) and a base (11); and anode cells (2) arranged on the side walls and the base and flood pipes (3) arranged in the region of the base. The anodes cells have a rectangular cross-section and are inserted into pocket-like recesses (16) of the side walls and base. The recesses have the same cross-section as the anode cells. The cells with their membrane surfaces (22) run planar with the remaining wall regions of the side walls and/or base. The flood pipes are inserted into the base and optionally into the side walls and open into the wall surfaces only with their outlet nozzles. Preferred Features: The corner regions between the side walls are rounded.
Patent EP-1083665-B1 (EP)
Inventor: ESTULIN WALTER
IPC: H04B1/40
Filed: 1995-07-17
Granted: 2008-02-06
Abstract: A subscriber unit of a time division multiple access (TDMA) radiotelephone system is, from a power consumption standpoint, reconfigured in each time slot of a TDMA frame to a power consumption tessellation in which subscriber unit circuit components not needed for communication signal processing in that time slot are powered down, and other components are powered up.Some circuit components are powered down by switching their power supply circuits. In order to minimize the extent of circuitry that must be provided to distribute power consumption control signals, other techniques (which utilize circuitry provided for other purposes), such as clock frequency control or power down commands, also are utilized to modify controlled circuit component power consumption without actually controlling power supply circuits. Loop connection length between the subscriber unit and the subscriber's telephone set, or other terminal equipment, is limited to a length which is much less than the length of a radio link on which the subscriber unit operates. Programmable ring frequency logic controls the frequency of a ringing signal generator, and a high frequency ring control signal is switched on and off in the cadence of ringing operation. Also an expansion header is provided to enable serving plural subscriber loop circuits with the same radio equipment for reducing per line power consumption.